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   <div id="projectname">gbmath
   &#160;<span id="projectnumber">v0.051</span>
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   <div id="projectbrief">c++ math library</div>
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<a href="ray3d_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;﻿</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#ifndef __GBMATH_H__</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor"></span><span class="preprocessor">    #error  DO NOT INCLUDE THIS FILE. USE:   #include &lt;gbmath/_gbmath.h&gt;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160; </div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="keyword">namespace </span>gbmath</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;{</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div>
<div class="line"><a name="l00022"></a><span class="lineno"><a class="code" href="classgbmath_1_1ray3d.html">   22</a></span>&#160;    <span class="keyword">class </span><a class="code" href="classgbmath_1_1ray3d.html" title="ray in 3d space ">ray3d</a> </div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;    {</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00025"></a><span class="lineno"><a class="code" href="classgbmath_1_1ray3d.html#a97752bf61a9b54152708cf1976c07115">   25</a></span>&#160;        <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>   <a class="code" href="classgbmath_1_1ray3d.html#a97752bf61a9b54152708cf1976c07115">orig</a>; </div>
<div class="line"><a name="l00026"></a><span class="lineno"><a class="code" href="classgbmath_1_1ray3d.html#a1dad3371200a316e8678061da93bf62c">   26</a></span>&#160;        <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>   <a class="code" href="classgbmath_1_1ray3d.html#a1dad3371200a316e8678061da93bf62c">dir</a>; </div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno"><a class="code" href="classgbmath_1_1ray3d.html#aae686a61a04b9affef13dab06c6078b2">   28</a></span>&#160;       <span class="keyword">inline</span> <a class="code" href="classgbmath_1_1ray3d.html#aae686a61a04b9affef13dab06c6078b2">ray3d</a>() {}</div>
<div class="line"><a name="l00029"></a><span class="lineno"><a class="code" href="classgbmath_1_1ray3d.html#a390f4e89ee639d44d5e86142346d43e8">   29</a></span>&#160;       <span class="keyword">inline</span> <a class="code" href="classgbmath_1_1ray3d.html#a390f4e89ee639d44d5e86142346d43e8">ray3d</a>(<span class="keyword">const</span> <a class="code" href="classgbmath_1_1ray3d.html" title="ray in 3d space ">ray3d</a>&amp; r) {<a class="code" href="classgbmath_1_1ray3d.html#a97752bf61a9b54152708cf1976c07115">orig</a>=r.<a class="code" href="classgbmath_1_1ray3d.html#a97752bf61a9b54152708cf1976c07115">orig</a>; <a class="code" href="classgbmath_1_1ray3d.html#a1dad3371200a316e8678061da93bf62c">dir</a>=r.<a class="code" href="classgbmath_1_1ray3d.html#a1dad3371200a316e8678061da93bf62c">dir</a>; }</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno"><a class="code" href="classgbmath_1_1ray3d.html#a514c2bddee1512ff9eed1cca11606e3c">   32</a></span>&#160;        <span class="keyword">inline</span> <a class="code" href="classgbmath_1_1ray3d.html#a514c2bddee1512ff9eed1cca11606e3c" title="may need to remove the option bNeedNormalizeDir ">ray3d</a>(<span class="keyword">const</span>  <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>&amp; _orig, <span class="keyword">const</span>  <a class="code" href="structgbmath_1_1vec3.html" title="3d-base vector. Corrected by operators epislon ">vec3</a>&amp; _dir, <span class="keywordtype">bool</span> bNeedNormalizeDir=<span class="keyword">true</span>)</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;        {</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;          <a class="code" href="classgbmath_1_1ray3d.html#a97752bf61a9b54152708cf1976c07115">orig</a>=_orig;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;          <a class="code" href="classgbmath_1_1ray3d.html#a1dad3371200a316e8678061da93bf62c">dir</a>=_dir;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;          <span class="keywordflow">if</span>(bNeedNormalizeDir)</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;              <a class="code" href="classgbmath_1_1ray3d.html#a1dad3371200a316e8678061da93bf62c">dir</a>.<a class="code" href="structgbmath_1_1vec3.html#a3206299b452ccb51fb816a29e8db7739">normalize</a>();</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;        }</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="code" href="classgbmath_1_1ray3d.html#abdddf73841038d392b516e5a2373cf4a">   41</a></span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classgbmath_1_1ray3d.html#abdddf73841038d392b516e5a2373cf4a" title="transform ray ">transform</a>(<span class="keyword">const</span>  <a class="code" href="structgbmath_1_1mat44.html" title="matrix 4x4. ">mat44</a>&amp; m)</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;        {</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;             <a class="code" href="classgbmath_1_1ray3d.html#a97752bf61a9b54152708cf1976c07115">orig</a>.<a class="code" href="structgbmath_1_1vec3.html#a3d16520be0b3736dd38e533985e08ab2" title="Transform as point. ">transform_coord</a>(m);</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;             <a class="code" href="classgbmath_1_1ray3d.html#a1dad3371200a316e8678061da93bf62c">dir</a>.<a class="code" href="structgbmath_1_1vec3.html#abab0eed903e0f9c8bd881ac54b7c1afa" title="Transform as normal. ">transform_normal</a>(m);</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;        }</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        <span class="keywordtype">bool</span>  <a class="code" href="classgbmath_1_1ray3d.html#abb0bc364a71a767de8b1c4cbdae79402" title="http://netlib.narod.ru/library/book0032/ch15_04.htm ">checkIntersectSphere</a>(<span class="keyword">const</span> <a class="code" href="classgbmath_1_1sphere.html" title="The scope of the center point and radius. She Bounding sphere. ">sphere</a>&amp; <a class="code" href="classgbmath_1_1sphere.html" title="The scope of the center point and radius. She Bounding sphere. ">sphere</a>) <span class="keyword">const</span> ;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;        <span class="keywordtype">bool</span> <a class="code" href="classgbmath_1_1ray3d.html#ac74b645b7246c6b82d5fd590094fd118" title="http://www.gamecoder.ru/2011/04/3d-3d.html ">checkIntersectSphere_2</a> (<span class="keyword">const</span> <a class="code" href="classgbmath_1_1sphere.html" title="The scope of the center point and radius. She Bounding sphere. ">sphere</a>&amp; <a class="code" href="classgbmath_1_1sphere.html" title="The scope of the center point and radius. She Bounding sphere. ">sphere</a>, <span class="keywordtype">float</span>* result) ;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;        <span class="keywordtype">bool</span> <a class="code" href="classgbmath_1_1ray3d.html#a73a4af873dda7b326a47eaf724abf805" title="Aslan. ">checkIntersectSphere_3</a>( <span class="keyword">const</span> <a class="code" href="classgbmath_1_1sphere.html" title="The scope of the center point and radius. She Bounding sphere. ">sphere</a>&amp; sph ) ;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        <span class="comment">//&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;      checkIntersectAABB        &gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;        <span class="comment">// http://www.gamecoder.ru/2011/04/3d-3d.html</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        <span class="keywordtype">bool</span> <a class="code" href="classgbmath_1_1ray3d.html#a9c5da71e0e2bde40b23fd663d47822c4">checkIntersectAABB</a>(<span class="keyword">const</span> <a class="code" href="classgbmath_1_1aabb.html" title="Axis Aligned Bounding Box by min and max points. ">aabb</a>&amp; <a class="code" href="classgbmath_1_1aabb.html" title="Axis Aligned Bounding Box by min and max points. ">aabb</a>,  <span class="keywordtype">float</span>* result) ;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        <span class="comment">//&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;  checkIntersectPlane  &gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;</span></div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;        <span class="comment">//</span></div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        <span class="keywordtype">bool</span> <a class="code" href="classgbmath_1_1ray3d.html#a6589cd2393534894ffe78a49304a6128">checkIntersectPlane</a>( <span class="keyword">const</span> <a class="code" href="structgbmath_1_1plane__s.html" title="plane in 3d ">plane_s</a>&amp; plane , <span class="keywordtype">float</span>* pfOutResult=NULL) <span class="keyword">const</span> ;</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;         <span class="comment">//--------------------------------------------------------</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;        <span class="keywordtype">float</span> <a class="code" href="classgbmath_1_1ray3d.html#aeeef1c1186bfe39dae5ae94e970b53e1" title="http://www.gamespp.com/algorithms/collisionDetectionTutorial02.html find the distance between a ray a...">distanceToPlane</a>( <a class="code" href="structgbmath_1_1plane__s.html" title="plane in 3d ">plane_s</a>&amp; plane )   <span class="keyword">const</span> ;</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    };</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160; </div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;}</div>
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